１９８４年，朝阳所处的努鲁儿虎山区被国务院列为全国１８片贫困地区之一。１９９３年，朝阳辖属的朝阳县与北票市被列入国家水土保持重点治理区，开始实施大凌河中游国家水土保持重点治理工程，从而，拉开大规模治山治水的序幕。经５ａ连续科学治理与开发，项目区小流域... In 1984, the Nulla Mountain where Chaoyang was located was listed by the State Council as one of the 18 impoverished areas in the country. In 1993, Chaoyang County and Beipiao City under the jurisdiction of Chaoyang were included in the national key soil and water conservation areas under the State Administration of Soil and Water Conservation, starting the implementation of the key national soil and water conservation projects in the middle reaches of the Dalinghe River, thus opening the prelude to large-scale water control. After 5 years of continuous scientific management and development, the project area small watershed ...